Paraphilia is a psychiatric diagnosis defined as 'a condition characterised by abnormal sexual desires, typically involving extreme or dangerous activities'. In some cases, this is clear-cut: bestiality and pedophilia are both classed as being paraphilia, for example. The problem comes when the term is overused: it's sometimes employed to medicalise and problematise fetishes of all kinds, which is marginalising and repressing and no good to anyone. At the end of the day, the answer is simple: if your "abnormal sexual desires" are potentially harmful to yourself or others in a way that is non-consensual or more than transient, calling them paraphilia and seeking treatment might be helpful. Otherwise you do you, boo.